Kit features:
All kits are sold with valve spring retainer seat to do complete replacement of either intake or exhaust side
All components are manufactured under iso 9001 certified factories
Nitride coated components to improve heat transfer and carbon build-up for increased valve train life
Valve features:
Forged one-piece construction to help with weight reduction and improved flow
Performance valves receive a swirl polish, smooth stem treatment and are made of 12-2n/suh35ht stainless steel
Spring feature:
Springs are made of swosc-v material (oil-tempered steel wire)
Some springs feature a progressive style design with more coils on one end of the spring
Progressive springs are heavier on one end and should always be installed towards the bottom
Non-progressive springs are paint marked and should be installed towards the top
Seats and retainers
Made from 4041 steel (select applications use 7075-t6 aluminum)
Designed to work with psychic stainless steel valves and springs
GasGas EC250F 10-15 EC300F 13-15 Yamaha YZ250F 01-13